Opinion:
Schumacher is only here now because - as a statistical 7 times world champion - he has such a draw on so many hopefuls and dreamers (and therefore is obviously attractive to sponsors), who are prepared to overlook his dastardly methodology.
As a driver alone, he was washed up years ago.
If he isn't a driver, then what is he. A human driving a formula one car at 200mph at the same age where drivers sit around a commentary box criticizing others?
I am not a dreamer, nor am I unrealistic. The thing is if Michael was destroying his car every race and struggling to gain the back end of the points then time should be called on his comeback.
However, Michael has shown us two years in a row why he deserves a seat.
An ability to defend a faster car for around 20 laps.
An ability to maintain race pace and catch his teammate.
An ability to drive for a win in adverse weather conditions/An ability to drive at the edge in adverse weather conditions.
An ability to pull off overtakes where others dare not.
An ability to carry his dedication to get the best out of the car until the end of the race.
An ability to work with the team effectively to develop a car short-term and long-term.. eg. Race or Season.
An ability not to get personal and work issues mixed up.
An ability not to be suppressed by his many critics.
His dastardly methodology can sometimes be mixed up with his scientific approach to his racing, an ability which is needed so badly at the Mercedes AMG Petronas team. People seem to forget Nico DNF'd only twice, deciding the 2011 points gap of only around 10 points, compared to last years 100.
Schumacher's performance increased by 10x or Rosberg's performance decreased 10 times?